Sometimes, we will receive the feedbacks that SD can not the read by camera, even format SD card can not help.When you have the information "Please insert SD" when you did inserted an SD card, please check below things:

1. Please select brand SD Card such as Samsung, Kingston...2. Please make sure you insert SD in correct way (Make the SD card brand logo face down and insert it.)3. Please check camera displaying time and time zone setting, and correct them according to your location. Go to computer camera settings > Device state > System time

4. When you read camera video on New Tenvis APP, please check below:

If your camera alarming videos are not in these period, then you may receive "No result..."